This task covers:
All vehicles except: M997A2, M1025A2,
M1035A2, M1043A2, M1045A2, M1097A2 TM 9-2320-280-24P
General mechanic's tool kit:
Transmission/transfer case assembly removed
General Safety Instructions
Oil pump seal installer
Torque converter must be supported during
removal and installation.
Torque converter must be supported during removal and instal-
lation. Failure to do this may cause injury to personnel or damage
This procedure is for the 3L80 transmission oil pump seal
replacement only. Refer to para. 17-29 for 4L80-E oil pump seal
Have drainage container ready to catch fluid.
Remove torque converter (3) from transmission (1).
Remove oil seal (5) from oil pump (6).
Apply sealing compound to outside diameter of oil seal (5).
Using seal installer, install oil seal (5) in oil pump (6).
Install torque converter (3) in transmission (1). Ensure drive lugs of inner pump rotor in oil
pump (6) are properly engaged with drive slots (4) of torque converter hub (2).